The reaction $\pi N \to \omega N$ in a dynamical coupled-channel approach

Yu-Fei Wang

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arXiv · 2401.01186

The reaction $\pi N \to \omega N$ in a dynamical coupled-channel approach

Yu-Fei Wang

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Abstract

This talk is on a refined investigation on light flavor meson-baryon scatterings, using a dynamical coupled-channel approach, i.e. the J\"ulich-Bonn model. The previous channel space of $\pi N$, $\pi \Delta$, $\sigma N$, $\rho N$, $\eta N$, $K \Lambda$ and $K \Sigma$ is extended by adding the $\omega N$ final state. The spectra of $N^*$ and $\Delta$ resonances are extracted, based on the result of a global fit to a worldwide collection of data, in the energy region from the $\pi N$ threshold to center-of-mass energy $z=2.3$ GeV (approximately $300$ parameters against $9000$ data points). A negative value of the $\omega N$ elastic spin-averaged scattering length has been extracted.

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Yu-Fei Wang. 2024-01-02. The reaction $\pi N \to \omega N$ in a dynamical coupled-channel approach. https://arxiv.org/abs/2401.01186

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